Compare 191231 vs 191413
| Property | 191231 | 191413 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1912311 | 1914131 |
| Prime factorization | 191231 | 191413 |
| Divisors count | 2 | 2 |
| Divisors | 1, 191231 | 1, 191413 |
| Number of properties | 7 | 8 |
| Additive primes | 6981st | 6987th |
| Cousin primes (2nd member) | 2049th | |
| Good primes | 994th | |
| Happy primes | 2654th | 2656th |
| Harmonic primes | 6468th | |
| Isolated primes | 13103rd | 13107th |
| Primes | 17264th | 17274th |
| Pythagorean primes | 8620th | |
| Sexy primes (1st member) | 4131st | |
| Sophie germain primes | 1981st | |
| Ulam primes | 1236th | |
| Roman numberals | ||
| Base 2 | 1011101010111111112 | 1011101011101101012 |
| Base 3 | 1002010221223 | 1002011201013 |
| Base 4 | 2322233334 | 2322323114 |
| Base 5 | 221044115 | 221111235 |
| Base 6 | 40331556 | 40341016 |
| Base 7 | 14243457 | 14250257 |
| Base 8 | 5653778 | 5656658 |
| Base 9 | 3212789 | 3215119 |
| Base 10 | 19123110 | 19141310 |
| Base 11 | 12074711 | 1208a211 |
| Base 12 | 927bb12 | 9293112 |
| Base 13 | 6907113 | 6918113 |
| Base 14 | 4d99514 | 4da8514 |
| Base 15 | 3b9db15 | 3baad15 |
| Base 16 | 2eaff16 | 2ebb516 |